30-07-2017, 01:25 AM
Cl wadhwa back side objectives in power systems so please add objective
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cl wadhwa power system objective questions pdf
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Cl wadhwa back side objectives in power systems so please add objective
02-08-2017, 12:06 PM
Q.1 The feeder is mainly designed from the point of view of -
A. Your Current Load Capacity
B. Drop in voltage in it
C. Operating voltage
D. Frequency of operation
Answer : A
Q.2 Distributors are designed from the point of view of -
A. Your Current Load Capacity
B. Operating voltage
C. Drop in voltage therein
D. Frequency of operation
Answer: C
Q.3 The transmission and distribution of electric power by underground system is superior to the head system with respect to -
A. Appearance and public safety
B. Cost of maintenance
C. Frequency of failures, power failures and accidents
D. All previous
Answer: D
Q.4 The main drawback of the underground system over the roof system is /
A. Exposure to lighting
B. High initial cost
C. Exposure to atmospheric hazards such as smoke, ice, wind, etc.
D. Inductive interference between power and switching circuit
Answer: B
Q.5 The main drawback of the overhead system over the sub-
A. The underground system is more flexible than the aerial system
B. Higher load current
C. Overload problem
D. High initial cost
Answer: C
Q.6 By increasing the transmission voltage to double its original value, you can send the same power while maintaining the loss of line-
A. Same as original value
B. Half the original value
C. Double the original value
D. One fourth of the original value
Answer: D
Q.7 For the same voltage drop, the voltage increase of a distributor n time-
A. Reduce section x of the conductor by n times
B. Increases the x section of the conductor by n times
C. Reduce section x of the conductor by n ^ 2 times
D. Increase the section x of the conductor by n ^ 2 times
Answer : A
Q.8 The volume of copper required for an AC transmission line is inversely proportional to-
A. current
B. Voltage
C. Power Factor
D. Both b and c
Answer: D
Q.9 Improve the power factor-
A. Reduce current for a given output
B. Increases losses online
C. Increases the cost of station equipment
D. None
Answer : A
Q.10 For the same conductor length, the same amount of energy, the same lnsse sand equals the maximum voltage to ground, which system requires the minimum conductor area-
A. Single-phase accumulator
B. Ac 3 phases
C. 2-wire steel
D. 3 ac cables
Answer: D
Q. 11 The transmission line connects-
A. Generating station to a switching station
B. Transformer-to-service station for service transformers banks
C. Transformer distribution to local consumption
D. Service points for consumer permits
Answer : A
Q.12 A 4-phase 4-phase system is commonly used to-
A. Primary distribution
B. Secondary distribution
C. Primary transmission
D. Secondary transmission
Answer: B
Q.13 The nominal voltage of a three-phase power system is given as
A. rms phase voltage
B. peak phase voltage
C. Peak line to line voltage
D. RMS Line to Line Voltage
Answer: D
Q.14 Which of the following is not usually the generation of voltage-
A. 6.6 kV
B. 9.9 kV
C. 11kV
D. 13.2kV
Answer: B
Q.15 In a transmission system the feeder supplies power to-
A. Transformer Substations
B. Service network
C. Distributors
D. All
Answer: C
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